Oil-engine.



No. 682,822. Patented Se'pt. I7, I90I. III. E. TOEPEL, F. B. WIDMAYER &.A. POTDEVIN.

OIL ENGINE.

(Application filed Aug. 31, 1900.) (No Model.)

2 Sheets-Shad I.

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THE NDRRIS PETERS co. PHOTfl-LIYHD. wnsnms-ron. o. c.

No. 682,822. Patented Sept. l7, I901. m. E. TDEPEL, r. B. WIIJMAYER & A.POTDEVIN. 0H. ENGINE.

(Application filed Aug. 31, 1900.) (No Model.) 2 Sheets-Shut 2.

"UNITED STATES PATENT OFFICE.

MIOHEAL E. TOEPEL, FRANK B. WIDMAYER, AND ADOLPH POTDEVIN, OF NEW YORK,N. Y.

GIL-ENGINE.

srncrFIcATIoN forming pm of Letters Patent No. 682,822, dated September17, 1901. Application filed August 31-, 1900. Serial No. 28,654. (Nomodel.)

' To all whom it may concern:'

Be it known that we, MIOHEAL EJIOEPEL, FRANK B. WIDMAYEB, and ADOLPHPQTDE- vIN, citizens of the United States, and residents of the city ofNew York, in the counties of New York and Kings and State of New York,have invented a certain new and useful Oil-Engine, of which thefollowing is a specification.

Our inventionrelates to internal-combustion engines.

The object of our invention is to secure a simple, compact, and durableengine and one particularly suited for use as a motor for cyclesor othervehicles.

Our invention consists in an improved bearing for the fly-wheel of theengine, the object being to secure a bearing of good length well adaptedto take up the thrust of the piston, while at the same time keeping thelateral dimensions of the motor down to a minimum and making it possibleto dispense with the usual projecting shaft in one face of thecrank-case, so that said face may be free from the usual projecting hubor bearing for such shaft.

. Another part of our invention relates to the manner of mounting acam-disk which is adapted to secure a movement of the valveoperating rodfor each two whole revolutions of the crank without employing thereducing-gear which is ordinarily used in engines of this class tooperate the exhaust-valve once in each cycle.

Fig. 3 is a face view of the cam 1 indicates the. engine-cylinder, 2 thepiston ,and 3 the connecting-rod,suitably pinned to the piston. V o

5 is the admission-valve rod, and 4 the exhaust-valve rod, both of whichvalves are normally seated by the action of springs surrounding therods.

' 6 is the operating push-rod, which acts to open the exhaust-valve andwhich in the usual form of gasolene-engines of the fouri cycle typeis'acted upon by a cam connected with the motor-shaft or crank-shaft bya reducing-gear, so that the valve shall be opened once in tworevolutions of the crank-shaft.

7 is the crank-chamber, made in two parts bolted together and fittedtogether by a joint,

(indicated at 8.)

Each part of the casing is provided with an internal boss or projection9, as shown, which wardly from the shell 7. To extend the shaft of themachine outside of the casing for the purpose of communicating motion orfor operating upon any parts, a rod 14. may be secured within the hollowhub of one of the flywheels 10, if desired.

3 is a connecting-rod connecting the piston 2 with the fly-wheels bymeans of a wrist-pin or bolt 11, extending through the fly-wheels,

as shown, and provided with a sleeve or bushjing 13, which fits theopening in the head of the rod 3 and has a rotary bearing in theflywheels, as indicated. Preferably thesleeve is capable of turningwithin the head of the connecting-rod. The inner faces of the flywheelsare brought as closely together as practicable, so that by theconstruction shownthe connecting-bearings between the fly-wheels andconnecting-rod so far as possible overhang the bearings for the shaft ofthe machine. The purpose of this is not only to secure strength anddurability in the bearings, but

also to bring the lateral dimensions of the motor within as small acompass as possible. It will be seen also that the hubs of the flywheelsbeing formed in one piece with them and extended out sufficiently toform practically a shaft for the motor, an extended bearing may beprovided by bringing the inner faces of the wheels into close proximityand into line with the thrust of the connectingrod. Thus the device isadapted to take up the heavy thrust of the explosion. It will also beseen that the outer faces of the halves of the crank-shell are smooth orflush and free from the usual projection on the line of;

the shaft of the engine. In other words, our machine has the bearingsfor its main shaft entirely inside of the crank case or shell, thusfurther adapting the machine for use as a bicycle-motor or in othersituations where it is desired to use a machine of small lateral compasswithout projecting parts and to have bearings which shall be strong anddurable andadapted to take up the heavy thrust of the explosions.

The exhaust-valve push-rod is operated from a cam-disk 15, set intotheface of one of the fly-wheels'and secured in position-therein in'an'ysuitable manner. Infitti'ngthis cam-' dis'k'the line Xthereonmustbein'line'with' the crank-pin. 16 is a curved dog which works in thedouble groove shown in the face of the cam-disk 15 and which isconnected with the push-rod 6 in any suitablemahneras, for instance, bya pin 17, which-engages the head 18 of said=push-rod. The head '18 worksup and down in suitable guides 1'9'onf the inner face of one-half of thecrank-chain her. The cam-groove is a double groove, the two parts ofwhich meet on one side, as shown. The inner groove is practically aby-pas'sf groove for the dog, in which said dog'rides during thatrevolution of the crank in which the pistononits outward movement drawsin a'f'resh firing charge and omits-backward movement compresses saidcharge and makes the same ready for firing. The dog is shown in Fig. 2in the position which it occupies at. the end of the outward movement ofthe pis-- ton, by which a fresh ch'arge'is drawn into the cylinder.-Assuming that the 'cycle'of actions begins at this point, the changingposition of the dog in the groovewould be as indicated by the dottedline, Fig. 3, providedwith arrow-heads at intervals, assumin'gthat therevolution of the diskis in the direction of the arrow 20. On thecompletion of 'the compression the dog occupies the position indicatedby the dotted lines at 16 "The charge is then fired,'and the forward endof the curved dog at the beginning of the outward movement of the pistonunder the impulse enters the outer groove andat theend of the impulseoccupies the position 16 in said groove, ready for being moved outwardfurther to open the exhaust-valve and keep it opened during the nexthalf-revolution of the crank as the piston moves backward. At the end ofthis half-revolution the dog occupies in the cam-groove the position 16and on the next outward movementis guided into the inner portion of thegroove by the shoulder 21, so as to close the exhaust and cause a freshcharge to be drawn into the cylinder, the cycle of actions beingcompleted when the piston completes its outward movement and the dogreassumes the original position. (Indicated in Fig. 2.) As will be seen,the inner groove of the cam-disk forms, in effect, a by-pass groove,whereby the exhaust-valve mechanism or push-rod is rendered inactiveduring one whole revolution of the crank.

We claim as our invention- '1. In an internal-combustion motor thecombination with the fly-wheel having a recess in its face, of avalve-operating cam-disk fastened within said recess.

2. In an internal-combustion motor a valve operating cam-disk having adouble cam groove adapted to operate the valve once for each two wholerevolutions of the crank-shaft combined with a fly-wheel having a'recessin its face and means for securing said cam-disk withins'aid recess.

'3. In an internal -combustion motor, the combination with'the two partcrank casing or shell each having a hollow internaljboss or projectionadapted to form a bearingfor'the shaft of the motor, of a twopartfly-wheel and a motor-shaft composed of the hubs of said fi'y-wheelsformed in one piece withthem'an'd journaled within the said hollowbosses or projections, as and for the purpose described.

4:. In aninternal-combustion motor of "the inclosed crank'type,bearingsfor the inotorsh'aft located entirely inside of the crankcase or'shell'and consisting of internalbosses or projections projectingfrom the inside of the crank case or shell and within which arejournaled the shaft of the motor consisting of the hub or'hubs of themotor fly-wheels. V

5. In an internal -combustion motor the combination of'a pair offly-wheels and a connecting-rod connecting thereto by bearings whichoverhang the shaft-bearings of the motor, and a motor-shaft consistingof the hubs of said fly-wheels formed in one piece therewithandjournaled in internally-projecting hollow bosses forming a part of thecrankcasing, as and for the purpose described.

6. In an internal-combustion motor, amotor-shaft'consisting of hubs, ofthe fly-wheels formed in one piece with them and j ournaled in hollowbosses projecting inwardly from the casingor shell of'themachine and allconstructed as described so that the bearings of the motor-shaft shallbe located entirely within the crank case or shell leaving the outerface of said shell flush or smooth.

7. In a motor of the inel osed-erailk type, a York and State of NewYork, this 29th day of 10 crank-shell having hollow internally-projeot-August, A. D. 1900.

i11 hubs or bosses and. flush or smooth exteri r surfaces oombir ed withthefiy wheel 01' wheels whose shaft 1s mounted in said bear- ADOLPHPOTDEVIN ings and with the bearing-surfaces entirely inside of the crankcase or shell, as and for 'Witnesses:

the purpose set forth. DELBERT H. DECKER, Signed at New York,in thecounty of New ETHEL L. LAWLER.

